The management of Kunkel Company is considering the purchase of a $42,000 machine that would reduce operating costs by $9,50 per year. At the end of the machine's five-year useful life, it will have zero salvage value. The company's required rate of return is 11%. Click here to view Exhibit 7B-1 and to determine the appropriate discount factor(s) using table. Required: 1. Determine the net present value of the investment in the machine. 2. What is the difference between the total, undiscounted cash inflows and cash outflows over the entire life of the machine? Complete this question by entering your answers in the tabs below. Determine the net present value of the investment in the machine. Note: Negative amounts should be indicated by a minus sign. Round your final answer to the nearest whole dollar amount. Use the appropriate table to determine the discount factor(s). Information on four investment proposals is given below: Required: 1. Compute the profitability index for each investment proposal. Note: Round your answers to 2 decimal places. 2. Rank the proposals in terms of preference